Since our experiment was about the growth and survival of American
bullfrog tadpoles in pondwater/solutions of different pH values,
we decided to let 65 tadpoles live in the control pondwater
and 12 other different solutions with the pH values as 4.0,
5.5, 7.0, 8.5, 10.0. We used round bottomed plastic containers
to contain the pondwater/solutions and put five 3 week old tadpoles
each in of them.